Hot-water heater



(No Model.) 2 Sheets-Sheet 1. J. T. GRIMSHAW & J. E. KENISELL.

HOT WATER HEATER.

Patented Jan. 4, 1898.

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(No Model.) V 2 SheetsSheet 2. J. T. GRIMSHAW & J. E. KENISELL.

HOT WATER HEATER.

No. 596,498. Patented Jan. 4, 1898.

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and expense.

UNITE STATES PATENT EFrcE.

JAMES T. GRIMSHAVV AND JOHN E. KENISELL, OF DETROIT, MICHIGAN.

HOT-WATER H EATER.

SPECIFICATION forming part of Letters Patent No. 596,498,11ated January4, 1898.

Application filed February 1, 1897.

To all whom it may concern.-

Be it known that we, JAMES T. GRIMSHAW and JOHN E. KENISELL, citizens ofthe United States, residing at Detroit, in the county of Wayne and Stateof Michigan, have invented certain new and useful Improvements in Hot-Water Heaters, of which the following, taken in connection with theaccompanying draw ings, is a specification sufficiently full, clear, andaccurate as to enable persons skilled in the art to make and use thesame.

The object of our invention is the production of a heater which shall bevery economical in the consumption of fuel, and thus have the capabilityof heating dwellings and other buildings at small cost, which shall notgenerate odors or produce soot dust, &c., and which can be operated andkept in efficient working order with the least amount of labor With thisobject in view our invention consists in a heater adapted for the use ofordinary city gas, gasolene, kerosene, or other liquid or gaseoussubstances as fuel.

It further consists in certain novelties of construction andcombinations of parts here-' inafter described and claimed.

0n the figures of the drawings, which illustrate an example of thephysical embodiment of our invention, like parts are designated by likeletters of reference.

Figure 1 is aview in elevation of our heater, a part thereof beingbroken away to show the relative location of certain internal parts.Fig. 2 is a sectional plan view taken on line a: as of Fig. 1. Fig. 3shows plan and sectional views of the casting constituting the top ofthe heater. Fig. 4 shows plan and sectional views of the casting B. Fig.5 illustrates in plan and section the bottom of the body of the heater.Fig. 6 is a view in sectional ele vation, showing the parts hereinafterdesignated as the retard, thecasting IV, and the apparatus for raisingand lowering the retard. Fig. 7 is a sectional plan view taken on line yy of Fig. 6. Fig. 8 is a view in elevation of the base-casting on whichthe heater is supported. Fig. 9 is a plan view of Fig. 8.

Referring to the drawings, E and F are two strong metallic cylinders,the former inside the latter, the space between them serving Serial No.621,523. (No model.)

when the several parts are united to contain water. The casting D of theshape shownfits the two cylinders at the bottom and the casting A fitsthe outer cylinder F at the top. The upper end of the cylinder E isclosed by the casting B. Enveloping the entire heater is a casingV ofsheet-iron, and the space between said casing and the cylinder F isfilled with some material which is a non-conductor of heat. Thecylinders E and F are securely held in contact with the castings D, A,and B by a series ofrods G and G, the parts being so assembled that theycan be taken apart by the removal of the nuts at the ends of the rods.

J J and S S are respectively the outgoing and return circulating-pipesof the heating system and which connect with suitable radiators atconvenient points of the circuit. The number of circuits will of coursedepend upon the size of the heater and the requirements of theparticular building or buildings to be warmed.

The vent-pipe K is secured within the casting A, as shown, a jam-nutbeing used to insure a tight joint. A tube 0, which may be from one anda half to twice as large in diameter as the vent-pipe K, has its upperend fixed in the casting B and is open to the water-space L. This tubeextends downwardly about two-thirds of the distance from the casting Btothe burner M. The lower end of the tube, at first made closed, isdrilled out and threaded to receive the lower end of the vent-pipe K, sothat said pipe K may be in communication with the space 0' within theretard.

The vent-pipe K at its upper end is joined to a casting WV, which isprovided with an opening K, and through which latter the products ofcombustion are discharged; It will be seen that as thus arranged thewaterspace is extended to the space between'the pipe K and the tube 0.Located in a circular row around the tube 0 and withinthe retard Care" anumber of water-circulating tubes R. The upper ends of these tubes arefixed in the casting B and communicate with the water-space L. The lowerends of the tubes pass loosely through holes in the bottom of the retardO, are then bent, as shown,

adjacent the burner M, and the extreme ends thereof fixed in thecylinder E, which brings them in communication with the water-space tothe space L. The retard O is closed at the bottom, but open at the topto the combustion-chamber. A rod P has its lower end fixed in the centerof the retard C and its upper end threaded to receive the nut N, as vThe nut has attached to it by a set-screw U the crank I. By turningshown in Fig. 6.

the crank the rod, and with it the retard, can be raised and lowered. Bythis instrumentality the draft is very effectively controlled.

In the casting B and occupying the space between the retard O andcylinder E are tubes R, closed at their lower ends and open at the upperends into the space L. The extreme ends of these tubes should just clearthe horizontal portions of the tubes R where they join the cylinder E.The number of tubes R will depend upon the desired capacity of theheater. However, as many should be used as is possible withoutexcessively impairing the strength of the casting B. p

The burner to be used in connection with our heater may be of anydesired form and type. We have shown one, M, by way of example, providedwith a base-casting T and with a pipe H for the introduction of suitablefuel.

Our heater may be used alone or several may be combined to form abattery.

If the building to be heated has no basement, the heater is set within abrick structure outside and the circulating-pipes, suitably covered byproper insulation, connected with the radiators by passing under thebuilding and through the floor oriioors. If the building has a basement,the heater may be placed in it and the vent K connected with a chimneywithout any brickwork around it.

In some cases a small heater may be set in a room, inclosed on threesides and provided with suitable means for carrying off the gasesgenerated by combustion.

From the foregoing it will be seen that we have produced a heateradapted for the burning of gas, oil, or other like fluid as fuel,whichis so constructed that it can be easily taken apart and reunited, whichis adapted by reason of the location of the tubes and waterspacesrelative to the path of the products of combustion to utilize a greatpart of the heat, which can easily be regulated, and which will conveyall the gases and odors generated by the combustion of the fuel outsidethe building in which the heater is located.

What we claim is- 1. The herein-described heater consisting of the outerand inner metallic cylinders, the castingD supporting both cylinders,the casting A closing the top of the outer cylinder, the casting Bclosing the top of the inner cylinder, thereby forming a water-spacebetween said castings A and B, the rods securing the cylinders andcastings together, a retard, as O, and a vent-pipe for carrying off theprod nets of combustion, in substance as set forth.

2. The combination with a heater having the two cylinders, threecastings, rods, and tubes R, of a retard within which are located thetubes R, and a vent-pipe also located within the retard, in substance asset forth.

3. The combination in a heater, constructed substantially as described,of the cylinders, the castings for closing the ends of the cylinders,the water-circulating tubes R, communicating with the upper and lowerwater-spaces, the tubes R closed at their lower ends, the retard, andthe'vent-pipe K located within the retard, in substance as set forth.

4. The combination with the heater, constructed substantially asdescribed, of the retard 0 adapted to be raised and lowered, thevent-pipe K having its lower end located within the retard and its upperend passing through the water-space L, in substance as set forth.

5. The combination with the heater, contop end with a nut, as N, andmeans for revolving the same to raise and lower the re tard, insubstance as set forth.

7. The combination with the heater,'constructed substantially asdescribed, of the retard adapted to be raised and lowered, the vent-pipewithin the retard and provided at its upper end with the casting Whaving the opening K, in substance as set forth.

8. The combination with the heater, constructed substantially asdescribed, of the outer and inner cylinders, the castings, the retardadapted to be raised and lowered, the water-circulatin g tubes R passingthrough the retard and communicating with the upper and lowerwater-spaces, the vent-pipe K, and the circulating-pipes for the system,the outgoing pipe leading from the water-space L and the return-pipedischarging into the space between the two cylinders, in substance asset forth.

9. The herein-described heater consisting of bottom thereof, means forraising and lowertube 0, and means for raising and lowering ing theretard, and a vent-pipe, as set forth. the retard, substantially as andfor the pur- 1o 11. The combination with the heater, conpose set forth.

struoted substantially as described, of the JAMES .T. GRIMSHAVV. 5retard, the tubes R passing through the re- JOHN E. KENISELL.

tard, the tube 0 open at the top to the Water- Witnesses:

space L, the vent-pipe K having its lower end FRED KEMNITZ,

threaded and secured within the bottom of the OHARLEY KEMNITZ.

